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Search for Highly Ionizing Particles with the Pixel Detector at Belle IIPublic
The Belle II experiment, located at the SuperKEKB collider at the high-energy research facility KEK in Tsukuba, Japan, started operation in 2018. Compared to the predecessor experiment Belle, Belle II plans to increase the peak luminosity by a factor of <40, by employing nano-beam technology in the interaction region. In particular the new, innerm… |
BELLE2-TALK-CONF-2019-028 | - |
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Search for the dark gauge vector and scalar bosons, the axion-like pseudo-scalar, and the dark matter at lepton collidersPublic
Since 1933, cosmological anomalies are reported at different scales and ages of the Universe. These anomalies could be due to a non-luminous mass ("dark matter"), change of the laws of gravity, or a combination of both. Lepton colliders can investigate the non-luminous mass scenario by searching for different dark matter candidates (millicharged … |
BELLE2-TALK-CONF-2019-027 | - |
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Tau Lepton Physics at Belle IIPublic
Belle II is a detector coupled to the SuperKEKB electron-positron accelerator, located in Tsukuba, Japan. From April to July of 2018, Belle II completed the Phase II of commissioning in which ~500 pb-1 of data was recorded. Phase III will start in 2019 and, by 2027, a dataset of 50 ab-1 is expected. This large dataset will provide a unique opportu… |
BELLE2-TALK-CONF-2019-026 | - |
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Direct measurement of 𝑅+-0 at Belle IIPublic
The ratio of the ϒ(4𝑆) → 𝐵+𝐵− and ϒ(4𝑆) → 𝐵0 ¯𝐵0 decay rates, 𝑅±0, represents a crucial input quantity to convert measured yields into branching fractions at 𝑒+𝑒− 𝐵-factory experiments. The most precise present day determinations rely on isospin assumptions. We present the status of a novel approach to determine the 𝐵± and 𝐵0 production fraction u… |
BELLE2-TALK-CONF-2024-016 | - |
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Sensitivity of magnetic monopole detection at the Belle II PXDPublic
Particles with isolated magnetic charge, so-called magnetic monopoles, are of high experimental and theoretical interest. As most theories predict a high energy loss of these particles in matter, magnetic monopoles, which could be produced in collider experiments, would only reach the inner detectors close to the interaction point. The Belle II pi… |
BELLE2-TALK-CONF-2024-015 | - |
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Energy scan results from Belle IIPublic
Talk at QWG 2024. The report presents the latest Belle-II results obtained based on the scan data above Y(4S). The results confirm the existence of Y(10753), previously discovered by Belle. The properties of this quarkonium are discussed in comparison with the predictions of various theoretical models. The report also presents new results on measu… |
BELLE2-TALK-CONF-2024-014 | - |
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Flavor Physics Experiments: Recent Results and Future ProjectionsPublic
Flavor Physics Experiments: Recent Results and Future Projections |
BELLE2-TALK-CONF-2024-012 | - |
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Vcb and Vub measurements at Belle and Belle IIPublic
This talk presents the recent |Vcb| and |Vub| results from Belle and Belle II. |
BELLE2-TALK-CONF-2024-011 | - |
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Tau physics at Belle and Belle IIPublic
Talk highlighting the recent tau physics results at Belle and Belle II |
BELLE2-TALK-CONF-2024-010 | - |
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Recent results from Belle and Belle IIPublic
Recent results from Belle and Belle II |
BELLE2-TALK-CONF-2024-009 | - |
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XYZ states - the quest for the spectroscopical patternPublic
This talk will focus on X(3872) and other multiquark candidate states observed in B meson decays and focus on results from Belle and Belle II. The results will be put into perspective by comparing to states observed at other experiments. Implications of the observed spectroscopical pattern will be discussed and conclusions for the underlying poten… |
BELLE2-TALK-CONF-2024-008 | - |
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Multiquark states: recent results in charm-strange and bottomonium spectroscopyPublic
Understanding the line shape of the cs and double-cs states, and searching for new resonances, are topics of great interest. Recent results in hadron spectroscopy are going to be presented. This talk covers in particular the most recent achievements by using the complete Belle and Belle II data sets in the analyses of the continuum, ISR, and gamma… |
BELLE2-TALK-CONF-2024-007 | - |
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Precise measurement of the tau-lepton mass at Belle IIPublic
The low-background environment of electron-positron collisions along with the large expected sample size and a hermetic detector make Belle II a premier experiment for studying tau-lepton physics. This talk presents recent world-leading results from Belle II determinations of the tau lepton mass. |
BELLE2-TALK-CONF-2023-198 | - |
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Searches for lepton flavor violation in meson decays at BellePublic
We present searches for the charged lepton-flavor-violating decays in $\Upsilon(1S) \to \ell^{\pm}\ell^{\prime\mp}$ and $\Upsilon(1S) \to \gamma \ell^{\pm}\ell^{\prime\mp}$ decays, where $\ell,\ell^\prime=e, \mu, \tau$ using $25 {\rm fb}^{-1}$ of $\Upsilon(2S)$ data. Using 772 million $B\bar{B}$ sample, we search for CLFV in $B^+\to\tau^{\pm}\ell^… |
BELLE2-TALK-CONF-2023-197 | - |
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Search for Inelastic Dark Matter with a Dark Higgs at Belle IIPublic
Belle II has a unique reach for a broad class of models that postulate the existence of dark matter particles in the MeV-GeV mass range. One highly motivated scenario is a model which involves inelastic dark matter, consisting of two dark matter states with a mass splitting between them and the presence of a dark Higgs boson. This model has a sign… |
BELLE2-TALK-CONF-2023-171 | - |
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Dark matter search at BellePublic
This is a presentation showing results produced by the Belle experiment on searches for an extra gauge boson, Z`, and for the scalar (leptophylic dark Higgs). We cover the previous result by Belle for the Z` search and also give the most recent progress on the Z` invisible decay mode. |
BELLE2-TALK-CONF-2023-170 | - |
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Z' analyses at Belle IIPublic
Belle has unique reach for a broad class of models that postulate the existence of dark matter particles with MeV—GeV masses. This talk presents recent world-leading physics results from Belle II searches for dark Z` decays. |
BELLE2-TALK-CONF-2023-169 | - |
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Search for (pseudo-)scalar and long-lived particles at Belle IIPublic
Belle II has unique reach for a broad class of models that postulate the existence of dark matter particles with MeV—GeV masses. This talk presents recent world-leading results from searches for scalar and long-lived particle at Belle II and the sensitivity to probe more DM models. |
BELLE2-TALK-CONF-2023-168 | - |
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Dark matter and low multiplicity searches at Belle IIPublic
Summary of the Belle II dark sector searches, with perspectives for future directions |
BELLE2-TALK-CONF-2023-167 | - |
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CKM first measurements at Belle IIPublic
CKM first measurements at Belle II |
BELLE2-TALK-CONF-2020-029 | - |
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